Question

car of a mass 1500kg travelling at 25m/s colloids with another car B of a mass 1000kg travelling 15m/s in the same fire. after the collision the velocity of car A become 20m/s. calculate the velocity of car B after the collision​

Answer 1

Answer:Thus, velocity of car 'B' after collision is 22.5m/s.

Explanation:

Answer 2

Answer:

Let,

Let,mass = m

Let,mass = minitial velocity = u

Let,mass = minitial velocity = ufinal velocity = v

Let,mass = minitial velocity = ufinal velocity = vhere,

m₁= 1500 kg m₂=1000 kg

u₁ = 25 m/s

U₂ = 15 m/s

V₁ = 20 m/s

we have to find v₂ !!

V2 is the velocity after collision

Here is a formula relating the values given,

m₁u₁+m₂u₂ = m₁v₁ + m₂+V₂

mquq+m2U2 = = 1500 × 25 +1000 x15

= 37500 + 15000

= 52500

m₁u₁+m₂u₂ = m₁v₁ + m₂+V₂

m_{1}*u_{1} + m_{2}*u_{2} = 1500 * 25 + 1000 * 1!

= 37500 + 15000

= 52500

m_{1}*v_{1} + m_{2} + v_{2} = 1500 * 20 + 1000v_{2}

= 30000 + 1000v₂

m₁U₁+M₂U₂ = m₁v₁ + m₂+V2

52500 = 3000 + 1000v_{2}

1000v_{2} = 52500 - 30000

1000v_{2} = 22500 v_{2} = 22500/1000

= 22.5 m/s

Thus, velocity of car 'B' after collision is 22.5m/s.

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